Sungrow MVS3200-US - Checking before Power on; MV Station Container; MV Switchgear

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step 5 Check the position of the oil level gauge according to the temperature-level curve according
to the local ambient temperature. Stop draining when the oil in the transformer is reduced to
the required level.
step 6 Close the drain valve and remove the drain hose connector and the hose.
step 7 Re-install the cover plate of the drain valve.
- - End
7.2 Checking before Power on
7.2.1 MV Station Container
No. Checking item
1 The installation conforms to the design requirements.
2 The container is level, and each door can be opened properly.
3 There is no crack, dent, or scratch on the container surface. Repaint areas with
paint flake-off (if any).
4 Each container has at least two ground points and is grounded securely with a
ground resistance of 4Ωor less.
5
The number and positions of external accessories conform to the enclosed
document.
6 All markings are correct, clear, and complete.
7.2.2 MV Switchgear
No.
Checking item
1
There is no crack, dent, or scratch on the cabinet surface.
2
The SF6 barometer pointer is in the green zone.
3
Rotate the current terminal, disconnect the scriber of the current terminal, and
measure the resistance at both ends of the fracture. The value of three-phase
resistance should be small and close. After the measurement, restore the
current terminal to the connection position and tighten it. The standby current
loop shall be shorted and grounded.
4
Apart the grounding wire of the secondary circuit and measure secondary loop
to the ground resistance and resistance should be M Ω level. Recover the
grounding wire and the resistance shall be 0 Ω.
5
If there is a relay protection tester or current source, check the value settings of
the protective device, including the set value, control word, and soft clamping
plate. The set value must match that provided by the user.
6
Check that the trip enable/disable slicer has been put into operation.
7 The door is closed.
8
The auxiliary AC power circuit breaker in the cabinet is switched on.
System Manual 7 Power On the MV Station